What is type 2a diamond?
Characteristics, how to distinguish, and the importance of certificates
Easy to understand explanation
A world that can't be explained by the 4Cs alone: We will deliver the complete picture of "Type 2a", which those who are attracted to crystallographic rarity end up searching for, along with illustrations.
When you begin to look deeply into diamonds, you will discover a world that cannot be explained by the 4Cs alone. The representative istype 2a diamondIt is. Many people are attracted not only to the beauty of the appearance but also to the crystallographic rarity, and in recent years,"The last area for those looking for quality loose items"It is attracting attention as
Especially for those who are comparing loose diamonds and loose diamonds, Type 2a is more than just an extension of the grade. What is carat, color, clarity, and cut?More specialized value standards discussed from a different perspectiveIt is. Diamond type is explained by GIA as a classification based on color and physical properties, and is considered important information that serves as the basis for identifying natural, synthetic, and treated stones.
What is a Type 2a Diamond as defined by GIA?
According to GIA, Type 2a diamonds areDiamond free of measurable nitrogen or boron impuritiesIt is. Although it is usually known as colorless, it can also show gray, light brown, light yellow, light pink, etc.One of the chemically purest typesIt is said that
💎 "chemically pure"This is the great appeal of type 2a diamonds. In addition to the 4Cs, it is supported by people who find value in the very structure of crystals.
It's not just a matter of "it's good because it's D color and IF".The fact that the stone is Type 2a is itself a reason to choose it.It is.
Why are type 2a diamonds so special?
The reason why type 2a diamonds are special is more than just their appearance."Component purity" and "rarity"It is located in GIA explains that knowledge of diamond types can help distinguish between natural, synthetic, and treated diamonds, and Type 2a is one of the most important classifications.
| Comparison items |
common diamond (Mostly Type Ia) |
type 2a diamond |
|---|---|---|
| Nitrogen content | Contains (exists as an aggregate) | Below detection limit (1ppm or less) |
| natural proportion | Approximately 98% | Approximately 1-2% |
| color trends | Colorless to yellow | Many are colorless (mostly distributed in D to F) |
| Value judgment axis | 4C (carat, color, clarity, cut) | 4C + Chemical purity of crystals |
| Judgment method | Usually not needed | Scientific judgment based on FTIR analysis is required |
Even in actual purchasing sites, people looking for Type 2a don't just want a high-quality diamond.I want to choose a diamond after understanding its value, which is different from ordinary high-quality diamonds.I tend to think that. Type 2a diamonds are a very suitable choice for those who value not only price but also rarity that they can choose with satisfaction.
It cannot be said that it is a type 2a diamond just by the wording of “PL analysis”.
What is very important here isDo not judge whether it is Type 2a only by the in-store explanation or simple notation.That's the point. In particular, there are cases where people understand that it is type 2 just by looking at the word "PL analysis", but that alone is not enough to make a purchasing decision.
Regarding diamonds, there are some items such as the 4Cs, where the nuances of evaluation by different appraisal institutions are a hot topic.Whether it is type 2 or not is a different story from the sweet and spicy grade.It is.
That's why,GIAorCentral Gem Laboratory (CGL)It is important to have the certificate verified by a reliable certifying agency.
Type determination flow using FTIR
GIA offers typing as an ancillary service.FTIR (Fourier transform infrared spectroscopy)It explains that the type is determined by CGL also provides a system for online inquiries based on the issued grading report number and carat weight, underscoring the importance of certificate verification.
View carefully selected routes with certificates Type 2a diamond | Selby lineup*Scheduled to be replenished at any time💎 View product list →
Why choose with GIA or Central Gem Laboratory (CGL) certificate?
If you want to truly understand and choose Type 2a diamonds,Comes with a certificate from GIA or Central Gem Research InstituteThat is a big reassurance. GIA is the organization that has standardized the 4Cs themselves, and has clearly stated that diamond evaluation is a "matter of precision."
| Item | GIA | Central Gem Laboratory (CGL) |
|---|---|---|
| Headquarters | california usa | Japan/Tokyo |
| Type determination | Provided as an auxiliary service | Can be included in the report |
| Online inquiry | GIA Report Check | Inquire by report number + carat |
| Inquiry target period | no limit | Report: within 5 years Sorting: within 2 years |
| Features | World standard 4C formulation organization | Japan's largest appraisal agency |
The reality is that when GIA performs Type 2 checks and issues, additional costs tend to be reflected in the price. Therefore, even for the same type 2a diamond,The appearance and price will change depending on which institution and how it is certified.You should understand that.
However, once it has been confirmed as Type 2 by an official appraisal agency, it is different from the 4C "difference in appearance",Can be treated as fundamental classification informationThere is a big difference.
The rumor on social media that type 2a is only ``fluorescent None'' is incorrect.
Recently, on SNS etc.“If it is type 2a, the fluorescence should be None.”Sometimes there is a view like this. However,Typing and fluorescence are not the same story。
GIA also analyzes the relationship between type information and fluorescence reaction.Differences in defect structureThis explains that type information is not a concept that uniformly fixes the fluorescence response.
Whether it's Selby's on-site experience or type 2a.Very understanding customers who want things like FaintThere are many. In fact, it can be said that enjoying the ``slightly different selection method'' is closer to the essential appeal of Type 2a diamonds.
How to choose Type 2a diamonds, which tend to be expensive
Type 2a diamonds often overlap with higher quality bands and tend to be more expensive. That's why it's important not just to say "it's good because it's expensive".Compare including supply routes and sales structureThat's it.
At Selby, backed by our long-standing overseas trading base, we leverage our ability not only to procure but also to sell to overseas markets, and we continue to manufacture high-quality diamonds.Direct import ~ Direct salesIt is being expanded. For high-priced products such as Type 2a diamonds, this difference in distribution structure is directly linked to the level of satisfaction with the price, leading to top-class sales volume and price competitiveness in Okachimachi.
Selby Okachimachi Ekimae store's loose expansion is compatible with type 2a search.
🚃 1 minute walk from the south exit of JR Okachimachi Station
The new store is expected to take advantage of its location in front of the station and further strengthen the flow of information that makes it easier to compare items.
Originally, Okachimachi was an area that was described by Jewelry Town Okachimachi (JTO) as ``Japan's largest jewelry specialty town.'' For those who want to choose while comparing routes,An environment where you can compare multiple stones in front of the stationis a big attraction.
Summary｜Type 2a diamonds go beyond "high quality", so choose a diamond with understanding
Type 2a diamonds are more than just high-grade diamonds. Free of measurable nitrogen or boron, as defined by GIAchemically extremely pure diamond, and its value is discussed on a different axis than the 4Cs.
- A rare classification that only exists in about 1-2% of natural diamonds.
- Don't make a judgment based on the wording of the PL analysis, check the GIA/CGL certificate.
- Fluorescent None is not the only option—it is important to choose with accurate knowledge
- Compare distribution structures and place emphasis on price satisfaction
- Actual comparisons in Okachimachi are a strong ally when choosing high-priced loose items.
Type 2a people are more knowledgeable"Proven Stone"Choose. For those who want to consider not only the price but also the certification, supply background, and actual comparison, a comparison study in Okachimachi and a direct import/direct sales store like Selby will be a strong option.
Type 2a diamond | Selby lineup
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